103 lines
3.1 KiB
C
103 lines
3.1 KiB
C
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/*
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----
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This file is part of SECONDO.
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Copyright (C) 2004, University in Hagen, Department of Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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//paragraph [1] Title: [{\Large \bf \begin{center}] [\end{center}}]
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//paragraph [10] Footnote: [{\footnote{] [}}]
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//[->] [$\rightarrow$]
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//[TOC] [\tableofcontents]
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//[_] [\_]
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*/
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#ifndef STREAMSOURCE_H
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#define STREAMSOURCE_H
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#include "Attribute.h" // implementation of attribute types
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#include "Algebra.h" // definition of the algebra
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#include "NestedList.h" // required at many places
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#include "QueryProcessor.h" // needed for implementing value mappings
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#include "AlgebraManager.h" // e.g., check for a certain kind
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#include "Operator.h" // for operator creation
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#include "StandardTypes.h" // priovides int, real, string, bool type
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#include "Algebras/FText/FTextAlgebra.h"
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#include "Symbols.h" // predefined strings
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#include "ListUtils.h" // useful functions for nested lists
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#include "Stream.h" // wrapper for secondo streams
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#include "LogMsg.h" // send error messages
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#include "Algebras/Relation-C++/RelationAlgebra.h" // use of tuples
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#include "Algebras/Distributed2/ConnectionInfo.h" //use of ConnectionInfo
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#include "Algebras/Distributed2/ErrorWriter.h"
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#include "SocketIO.h"
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#include "FakedStream.h"
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namespace sharedstream {
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/* This class will represent a source for an neverending stream.
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* Other instances of Secondo (StreamProcessors) can connect to the
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* StreamSource and receive a copy of each tuple arriving.*/
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class StreamSource {
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public:
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/*constructor*/
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StreamSource(int port);
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/*constructor with a faked Stream*/
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StreamSource(FakedStream* fakestr, int port);
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/*destructor*/
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~StreamSource();
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void addProcessor(std::string ip, std::string port);
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void deleteProcessor(std::string ip, std::string port);
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void sendTuple(Tuple tuple);
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struct ProcessorEntry {
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std::string ipAdress;
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std::string port;
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ProcessorEntry(std::string ipAdress, std::string port);
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};
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private:
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//vector for the registered StreamProcessors
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std::vector <ProcessorEntry> processors;
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//Object for a faked stream
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FakedStream *fakedStream;
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};//end streamsource
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}//end namespace
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#endif // STREAMSOURCE_H
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